use 1.67.0 for release

Author: tarkah

.github/workflows/release.yml

@@ -67,7 +67,8 @@ jobs:
       - name: Install stable toolchain
         uses: actions-rs/toolchain@v1
         with:
-          toolchain: stable
+          # TODO: Update for future releases
+          toolchain: 1.67.0
           target: ${{ matrix.target.target }}
           override: true